摘要
目的:研究改性催化剂对N_(2)O_(5)硝化甲苯的影响。方法:本文采取3种方法改性HZSM-5沸石分子筛,在N_(2)O_(5)硝化甲苯中应用催化剂。结果:催化剂应用后,-硝基甲苯收率明显提升,其中浸渍法改性具备更优的效果,活性最高的为Cu-Z5-IM,达到67.7%的-硝基甲苯产量,与未改性时的49.0%相比提升了18.7%。结论:在N_(2)O_(5):甲苯=1:1、反应温度15℃、反应时间1h、催化剂为HZSM-5且用量5g的反应条件下,3种改性方案皆可促进催化剂活性及硝化选择性地提升。
Objective To study the effect of modified catalysts on N_(2)O_(5)nitration of toluene. Methods In this paper,three methods were adopted to modify HZSM-5 zeolite molecular sieve, and the catalyst was used in N_(2)O_(5)nitration of toluene. Results After the application of the catalyst, the yield of-nitrotoluene was significantly improved to 67.7%, and the impregnation method had better effect. 49.0, an increase of 18.7%. Conclusion Under the reaction conditions of N_(2)O_(5):toluene=1:1, reaction temperature of 15℃, reaction time of 1h, catalyst of HZSM-5 and dosage of 5g, all three modification schemes can promote the improvement of catalyst activity and nitration selectivity.
作者
樊蓉
Fan Rong(Modern College of Humanities and Sciences of Shanxi Normal University,Linfen Shanxi 041000,China)
出处
《江西化工》
2023年第1期71-73,81,共4页
Jiangxi Chemical Industry
